JPH08307382A - サブ・チップ分解能を持つｃｄｍａレーキ・レシーバ - Google Patents

サブ・チップ分解能を持つｃｄｍａレーキ・レシーバ

Info

Publication number
JPH08307382A
JPH08307382A JP8101767A JP10176796A JPH08307382A JP H08307382 A JPH08307382 A JP H08307382A JP 8101767 A JP8101767 A JP 8101767A JP 10176796 A JP10176796 A JP 10176796A JP H08307382 A JPH08307382 A JP H08307382A
Authority
JP
Japan
Prior art keywords
receiver
signal
sequence
multipath
chip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP8101767A
Other languages
English (en)
Japanese (ja)
Inventor
Zoran Kostic
コスティック ゾラン
Gordana Pavlovic
パヴロヴィック ゴアダナ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A T and T I P M CORP
AT&T Corp
Original Assignee
A T and T I P M CORP
AT&T Corp
AT&T IPM Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A T and T I P M CORP, AT&T Corp, AT&T IPM Corp filed Critical A T and T I P M CORP
Publication of JPH08307382A publication Critical patent/JPH08307382A/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70757—Synchronisation aspects with code phase acquisition with increased resolution, i.e. higher than half a chip
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
JP8101767A 1995-04-24 1996-04-24 サブ・チップ分解能を持つｃｄｍａレーキ・レシーバ Withdrawn JPH08307382A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/427,519 US5648983A (en) 1995-04-24 1995-04-24 CDMA rake receiver with sub-chip resolution
US08/427519 1995-04-24

Publications (1)

Publication Number Publication Date
JPH08307382A true JPH08307382A (ja) 1996-11-22

Family

ID=23695219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8101767A Withdrawn JPH08307382A (ja) 1995-04-24 1996-04-24 サブ・チップ分解能を持つｃｄｍａレーキ・レシーバ

Country Status (4)

Country Link
US (1) US5648983A (de)
JP (1) JPH08307382A (de)
CA (1) CA2173885A1 (de)
DE (1) DE19615257A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001054367A1 (fr) * 2000-01-19 2001-07-26 Mitsubishi Denki Kabushiki Kaisha Recepteur numerique base sur un logiciel pouvant etre adapte a divers systemes de multiplexage
KR100473586B1 (ko) * 1997-08-26 2005-07-01 센터 포 와이어리스 컴뮤니케이션즈, 내쇼날 유니버시티 오브 싱가폴 다중사용자부호분할다중접속수신기

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JP3512296B2 (ja) * 1996-03-08 2004-03-29 富士通株式会社 フェージング等化器
US5790537A (en) * 1996-05-15 1998-08-04 Mcgill University Interference suppression in DS-CDMA systems
US6510687B1 (en) 1996-06-14 2003-01-28 Sharav Sluices Ltd. Renewable resource hydro/aero-power generation plant and method of generating hydro/aero-power
JP2751920B2 (ja) * 1996-06-21 1998-05-18 日本電気株式会社 スペクトル拡散信号の同期捕捉方法及び装置
US5889827A (en) * 1996-12-12 1999-03-30 Ericsson Inc. Method and apparatus for digital symbol detection using medium response estimates
US6078573A (en) * 1997-04-11 2000-06-20 Research Foundation Of State University Of New York Circuitry and method for demodulating code division multiple access (CDMA) signals
US6269075B1 (en) 1998-01-26 2001-07-31 Nokia Mobile Phones Limited Finger assignment in a CDMA rake receiver
US6731622B1 (en) 1998-05-01 2004-05-04 Telefonaktiebolaget Lm Ericsson (Publ) Multipath propagation delay determining means using periodically inserted pilot symbols
DE19824218C1 (de) * 1998-05-29 2000-03-23 Ericsson Telefon Ab L M Multipfad-Ausbreitungsverzögerungs-Bestimmungsvorrichtung unter Verwendung von periodisch eingefügten Pilotsymbolen
US6173006B1 (en) * 1998-09-11 2001-01-09 Lg Information & Communications, Ltd. Direct sequence CDMA device and method for using the same
DE69934951T2 (de) * 1998-10-07 2007-10-25 Texas Instruments Inc., Dallas Kanalschätzung in Raum-Zeit blockkodierter Sendeantennendiversität für WCDMA
US6330271B1 (en) 1998-10-13 2001-12-11 Telefonaktiebolaget Lm Ericsson (Publ) CDMA receiver that shares a tracking device among multiple rake branches
US6625197B1 (en) * 1998-10-27 2003-09-23 Qualcomm Incorporated Method and apparatus for multipath demodulation in a code division multiple access communication system
US6128330A (en) 1998-11-24 2000-10-03 Linex Technology, Inc. Efficient shadow reduction antenna system for spread spectrum
US6442193B1 (en) 1999-03-30 2002-08-27 Koninklijke Philips Electronics N.V. Combining sub-chip resolution samples in arms of a spread-spectrum rake receiver
US6314130B1 (en) 1999-04-28 2001-11-06 Dspc Technologies, Ltd. System and method for joint time tracking of multiple paths
DE19929727C2 (de) * 1999-06-29 2003-01-30 Siemens Ag Empfangsteil zum Betrieb eines Empfangsteils
DE19933542A1 (de) 1999-07-16 2001-01-25 Siemens Ag Verfahren und Vorrichtung zur Synchronisation von Mobilfunkempfängern in einem Mobilfunksystem
DE19935480A1 (de) 1999-07-28 2001-02-22 Infineon Technologies Ag Verfahren zur Schätzung der Kanalimpulsantworten eines Mobilfunkkanals
DE19937507C2 (de) * 1999-08-09 2002-01-03 Siemens Ag Empfänger für ein Nachrichtenübertragungssystem
JP3279297B2 (ja) * 1999-09-24 2002-04-30 日本電気株式会社 Ｃｄｍａ移動通信受信方式におけるサーチ方法および受信装置
KR100305771B1 (ko) * 1999-11-18 2001-10-18 서평원 무선가입자망의 동기신호 수신 장치
FI112893B (fi) 1999-12-21 2004-01-30 Nokia Corp Menetelmä vastaanottimessa ja vastaanotin
DE10001649A1 (de) * 2000-01-17 2001-08-02 Infineon Technologies Ag CDMA-Empfänger
AU2001236855A1 (en) * 2000-02-11 2001-08-20 The Regents Of The University Of California Method and apparatus for resolving multipath components for wireless location finding
US6856610B2 (en) * 2000-02-28 2005-02-15 Texas Instruments Incorporated Wireless code division multiple access communications system with channel estimation using fingers with sub-chip spacing
JP3453100B2 (ja) * 2000-03-31 2003-10-06 松下電器産業株式会社 マッチドフィルタおよびマッチドフィルタにおける演算方法
US6728324B1 (en) * 2000-07-31 2004-04-27 Rf Micro Devices, Inc. Method and apparatus for multipath signal compensation in spread-spectrum communications systems
TW540200B (en) * 2000-11-09 2003-07-01 Interdigital Tech Corp Single user detection
US7292621B2 (en) * 2001-05-08 2007-11-06 Siemens Aktiengesellschaft Method for detecting multipath signals
DE10141393C2 (de) * 2001-08-23 2003-07-10 Siemens Ag Vorrichtung und Verfahren zur Kanalschätzung in einem Spreizspektrum-Kommunikationssystem
TWI261468B (en) * 2001-11-02 2006-09-01 Benq Corp Rake reception device and method
US7061967B2 (en) * 2002-06-24 2006-06-13 Comsys Communication & Signal Processing Ltd. Multipath channel tap delay estimation in a CDMA spread spectrum receiver
US7177348B2 (en) * 2002-09-04 2007-02-13 Yang George L Multipath receiver of a spread spectrum communication system with dynamic matched filter and efficient signal combiner
US7110481B2 (en) * 2002-09-28 2006-09-19 Yang George L Multipath rake receiver of high symbol rate burst communication system
AU2003286785A1 (en) * 2002-11-01 2004-06-07 Magnolia Broadband Inc. Processing diversity signals using a delay
US7272176B2 (en) * 2003-02-18 2007-09-18 Qualcomm Incorporated Communication receiver with an adaptive equalizer
US7257377B2 (en) * 2003-02-18 2007-08-14 Qualcomm, Incorporated Systems and methods for improving channel estimation
US20040161057A1 (en) * 2003-02-18 2004-08-19 Malladi Durga Prasad Communication receiver with a rake-based adaptive equalizer
US7356100B2 (en) * 2003-03-03 2008-04-08 Mitsubishi Electric Research Laboratories, Inc. Estimating channel impulse response and equalizer coefficients in UWB communication systems
US7356074B2 (en) * 2003-05-08 2008-04-08 Rf Micro Devices, Inc. Estimation of multipath channel with sub-chip resolution
GB2404822B (en) * 2003-08-07 2007-07-11 Ipwireless Inc Method and arrangement for noise variance and sir estimation
US7403557B2 (en) * 2004-07-27 2008-07-22 Nokia Corporation Apparatus and method for hybrid traffic and pilot signal quality determination of finger lock status of rake receiver correlators
JP4790728B2 (ja) * 2005-01-14 2011-10-12 トムソン ライセンシング セルラー受信機における装置及び方法
EP1836776A1 (de) * 2005-01-14 2007-09-26 Thomson Licensing Verwürfelungscodegenerator auf ram-basis für cdma
US20070297493A1 (en) * 2005-01-14 2007-12-27 Keel Alton S Efficient Maximal Ratio Combiner for Cdma Systems
US8059776B2 (en) * 2005-01-14 2011-11-15 Thomson Licensing Method and system for sub-chip resolution for secondary cell search
US8442094B2 (en) * 2005-01-14 2013-05-14 Thomson Licensing Cell search using rake searcher to perform scrambling code determination
US7957453B2 (en) * 2008-03-20 2011-06-07 Raytheon Company Method for operating a rake receiver
CN101989864B (zh) * 2009-08-04 2013-10-30 南京邮电大学 一种ds/cdma系统中的盲多址干扰抑制方法
CN110097411A (zh) * 2018-01-31 2019-08-06 阿里巴巴集团控股有限公司 一种对象列表生成方法、询价单列表生成方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5448590A (en) * 1993-03-23 1995-09-05 At&T Corp. Equalization technique for compensating for degradation to the transmission of digitally modulated signals
US5377226A (en) * 1993-10-19 1994-12-27 Hughes Aircraft Company Fractionally-spaced equalizer for a DS-CDMA system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473586B1 (ko) * 1997-08-26 2005-07-01 센터 포 와이어리스 컴뮤니케이션즈, 내쇼날 유니버시티 오브 싱가폴 다중사용자부호분할다중접속수신기
WO2001054367A1 (fr) * 2000-01-19 2001-07-26 Mitsubishi Denki Kabushiki Kaisha Recepteur numerique base sur un logiciel pouvant etre adapte a divers systemes de multiplexage
JP4619604B2 (ja) * 2000-01-19 2011-01-26 ミツビシ・エレクトリック・リサーチ・ラボラトリーズ・インコーポレイテッド 多数のマルチプレクシング方式に適応可能なソフトウェア−ベースのデジタル受信機

Also Published As

Publication number Publication date
US5648983A (en) 1997-07-15
DE19615257A1 (de) 1996-10-31
CA2173885A1 (en) 1996-10-25

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Legal Events

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A300 Application deemed to be withdrawn because no request for examination was validly filed

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Effective date: 20030701